79710689 has 2 divisors, whose sum is σ = 79710690. Its totient is φ = 79710688.

The previous prime is 79710677. The next prime is 79710707. The reversal of 79710689 is 98601797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 2534464 = 8785^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 79710689 - 2¹² = 79706593 is a prime.

It is not a weakly prime, because it can be changed into another prime (79715689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39855344 + 39855345.

It is an arithmetic number, because the mean of its divisors is an integer number (39855345).

Almost surely, 2^79710689 is an apocalyptic number.

It is an amenable number.

79710689 is a deficient number, since it is larger than the sum of its proper divisors (1).

79710689 is an equidigital number, since it uses as much as digits as its factorization.

79710689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 79710689 is about 8928.0842849964. The cubic root of 79710689 is about 430.3668925609.

The spelling of 79710689 in words is "seventy-nine million, seven hundred ten thousand, six hundred eighty-nine".